EP3439574A1 - Palatal expansion device (palatal expander) - Google Patents
Palatal expansion device (palatal expander)Info
- Publication number
- EP3439574A1 EP3439574A1 EP17720547.3A EP17720547A EP3439574A1 EP 3439574 A1 EP3439574 A1 EP 3439574A1 EP 17720547 A EP17720547 A EP 17720547A EP 3439574 A1 EP3439574 A1 EP 3439574A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- patient
- support
- jack
- cylinder
- mouth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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- 210000003254 palate Anatomy 0.000 abstract description 13
- 210000001847 jaw Anatomy 0.000 abstract description 12
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- 210000005180 arcus palatinus Anatomy 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/10—Devices having means to apply outwardly directed force, e.g. expanders
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/66—Alignment, compression or distraction mechanisms
- A61B17/663—Alignment, compression or distraction mechanisms for jaw bones, e.g. subcutaneous distractors with external access
Definitions
- the invention is in the field of orthodontics, dentofacial orthopedics (odf) and maxillofacial surgery, including human.
- Palatal expansion devices or maxillary circuit breakers, are known for use in enlarging the palate and upper jaw in children, adolescents, or in some cases adults. They are used when the upper jaw is too narrow. They make it possible to grow the set consisting of the two maxillary bones in the transverse direction, as well as to widen the medial palatal sutures and the incisal sutures. A widening or disjunction of the sutures is sought by a skeletal effect and an enlargement of the dental arch by a dental-alveolar effect, depending on the type of support, the pressure and the age of the patient.
- a central cylinder is activated on prescription in order to perform centripetal distraction or disjunction.
- the cylinder can be integrated in a removable plate, or glued on the teeth by means of thermoformed gutters or rings.
- the system uses bone supports on the maxillary, or dental, bones on the molars, premolars and canines.
- the entire device is custom made by a prosthetic laboratory.
- Figure 1 there is shown such a known palatal expansion device, presented by way of example. It comprises support pieces 1 and 2, each consisting of a ring which encloses a molar on each side of the palate and bears on the clamped molar and the neighboring teeth via mesial or distal extension bars. support. It also comprises a central cylinder 3. The central cylinder 3 is adjustable to ensure a transverse spacing between the two rings 1 and 2. Rigid rods 4, 5 and 6, 7 provide the fixed connection between the central cylinder 3 and the parts support 1 and 2, allowing the device to be as uncomfortable and discreet as possible. These rods ensure links between the central cylinder and the teeth, but also ensure the rigidity, transmission and distribution of forces required for the desired movements.
- FIG. 2 there is shown the device placed in the mouth of a patient, who wears for several weeks or months. As the device produces its effects, the cylinder is adjusted (or “activated") to maintain a spreading force, thus gradually increasing the distance between the two parts of the jaw and / or the different bones. The adjustment is made by turning a central screw of the cylinder which causes the transverse expansion. The screw is turned with a suitable tool, such as a key 8. When the desired expansion is reached, the device is held in place for a period of time to consolidate the treatment, and then it is removed.
- a suitable tool such as a key 8.
- EP09190207 discloses a maxillary disjunction device, using a concave receiving element for each end of the arm associated with a fixing surface for association with the corresponding tooth, the receiving element being coupled to the end of the arm by mechanical interference or shrinkage or welding by point, or laser welding, or means of adhesion.
- US20130252195 discloses a maxillary disjunction device kit using arms of different geometries to choose.
- an orthodontic device comprising at least a first support means, for dental, gingival or bone support, to press on the left of a jaw (or on the left maxillary bone or on the left mandibular bone) of a patient to be treated, at least a second support means, for dental, gingival or bony support, to press on the right of said jaw (or on the maxillary bone right or right mandibular bone) and a central cylinder for modulating a spacing of said support means for enlarging the palate of said patient, characterized in that the device further comprises a means of continuous or discrete angular adjustment, for example a mechanical connection of rotation, between the jack and said first support means and a continuous or discrete angular adjustment means, for example a mechanical connection of rotation, between the jack and said second support means to allow a geometric adjustment during placing the device in the patient's mouth, at least in the vertical direction, the anteroposterior sense or the transverse direction, for adapting the
- Such a system offers great modulability, can be prefabricated, and is easily adjustable and adaptable for each patient. It is adjustable, adjustable in the mouth to the chair or out of mouth, and it is fixable, that is to say that it is then possible to freeze its position.
- the system has an articulation that exists only for the adjustment and is then thwarted once finished setting up.
- the adjustment is possible in the vertical direction, the anteroposterior sense and the transverse direction;
- the first or second support means comprises at least a first connecting beam to be put in place between the jack and a first tooth, and a second connecting beam to be put in place between the jack and a second tooth;
- At least one of the beams is telescopic or at least adjustable in length to allow geometric adjustment during placement of the device in the patient's mouth;
- At least one of the beams is removable, the device comprising at least one replacement beam of a different length to allow a geometric adjustment during a placement of the device in the patient's mouth; the device comprises a mechanical connection in rotation at the end of each beam between the beam and the jack;
- fasteners for sticking to the teeth, by sealing or gluing or mechanical or chemical retention, and carrying connecting means for connecting the fasteners to the jack, the device further comprising complementary connecting elements connected to the jack to place the device in the patient's mouth using the fasteners;
- At least one of the fasteners comprises a zone of weakness or weakness allowing removal by deformation
- the fasteners of which there are several types depending on the importance of the pressure and the type of movement to be applied bear single external notches, double external notches, internal double internal notches or an external ball for an interlocking connection, or screw members for a screw connection;
- the cylinder is fixed by embedding or any other means of attachment on a left support and a free right support relative to each other.
- a disjunction cylinder equipped with articulated arms in three dimensions The set is offered as a kit, with adjustable parts of different lengths.
- a fixation system makes it possible to fix the arms to the teeth, adapting to each tooth, and adapting to the distance and the orientation between the central cylinder and the tooth.
- the entire system allows the installation of the device by a fine and adaptable bonding where all the elements are prefabricated and adjusted directly into the patient's mouth. This results in a saving of time, and a comfort for the practitioner and the patient, as well as a better precision.
- the invention also relates to a method of fitting an orthodontic device comprising a step of forming a first support for the device on the left of a jaw of a patient to be treated, a step of forming a second support for the device on the right of said upper jaw, and a step of modulating the distance between the two jaws by a central cylinder of the device, characterized in that the laying method further comprises a step of adjusting an angle between the cylinder and said first support or an angle between the cylinder and said second support to allow a geometric adjustment of the device in the mouth of the patient or out of the mouth adapted to the morphology of the latter, at least in the vertical direction, the anteroposterior sense or the transverse direction.
- the steps of formation of the supports may comprise the establishment of a support on the jaw, and / or the arrangement of the device resting on the jaw.
- Figure 1 shows a system according to the prior art.
- Figure 2 shows the system of Figure 1 in position.
- Figure 3 shows a general view of a system according to the invention, during its implementation.
- Figure 4 shows a general view of the system of Figure 3, once attached.
- Figures 5a to 5d show a first aspect of the invention, namely fasteners to be placed on the teeth, in 4 different variants.
- Figures 6a to 6d show a detail of the aspect of the previous invention, in different variants.
- Figure 7 shows a particular variant of the previous aspect.
- FIGS 8a and 8b show another particular variant of the previous aspect.
- Figure 9 shows a general view of the implementation of a system according to the invention showing the previous aspect.
- Figures 10a to 10c show a second aspect of the invention, consisting of a cylinder bearing ball joints.
- Figures 11a and 11b show a first important property of a system according to the invention.
- Figure 1 1c shows an alternative implementation.
- Figure 11.1 presents an option.
- Figures 12a to 12c show a second important property of a system according to the invention, in connection with a fourth aspect of the invention, consisting of a telescopic beam.
- Figures 13a to 13c show a third important property of a system according to the invention, in connection with a fifth aspect of the invention, consisting of a fastening element in rotation vis-à-vis a beam.
- Figure 14 shows a sixth aspect of the invention, consisting of a clip fastening tooth by tooth.
- Figure 15 shows the same aspect, in a variant.
- FIGS 16a to 16c show three possible settings of the system according to the invention, made possible by the various aspects discussed.
- Figure 17 shows a possible option for the system according to the invention.
- Figure 18 shows another possible option for the system according to the invention.
- Figure 19 shows yet another possible option for the system according to the invention.
- FIG 3 there is shown a palatal expansion system 10 according to the invention, in place at the level of the upper jaw of a patient.
- the palatal expansion system 10 comprises six fixing elements to the teeth 1 1 to 16, of which three, referenced 1 1 to 13, on the teeth on one side of the jaw and three others, referenced 14 to 16, on the teeth corresponding on the other side of the jaw.
- Fixation and support may be dental, gingival and / or bone.
- the palatal expansion system further comprises six support arms (or beams) 17 to 22 each resting on one of the fastening elements 1 1 to 16. It further comprises a central cylinder 23.
- the support arms 17 to 22 each connect one of the fastening elements 1 1 to 16 respectively to the central cylinder 23.
- the support arms 17 to 22 are all telescopic arms, or at least arms adjustable in their length by one or the other. other of several systems possible: pneumatic cylinder, telescopic arm, screw thread, notched arm ..., which can adapt various lengths, the values of which can be chosen continuously or discretely.
- Each of the support arms is connected to the central cylinder by an associated ball joint R1, and to the corresponding teeth attachment element by a second ball joint R2 associated.
- FIG 4 there is shown the palatal expansion system 1 0 after its stiffening.
- One or more stiffening elements stiffen the six ball joints R1 linking the central jack to the arms.
- Rigidification elements are also placed at the level of the ball joints R2 connecting the arms and the fastening elements to the teeth 1 1 to 16.
- the stiffening elements may all be of the same type, or be different. Different stiffening strategies can be used.
- a stiffening element integrated in the palatal expansion system 10 for example integrated in the ball joints R1 and R2, or brought from the outside, such as glue, such as a composite glue, a glass ionomer cement, a glue product Mening (Dentsply brand) MRI or a photopolymerization or chemopolymerization activated resin.
- glue such as a composite glue, a glass ionomer cement, a glue product Mening (Dentsply brand) MRI or a photopolymerization or chemopolymerization activated resin.
- the system once the system is locked, it can be unlocked with an unlock key or any external tool. In other embodiments, once the system is locked, it can not be unlocked, and must be, in order to be undone, in the case of a light curing to undo it is necessary to break. This is the case for example in the case of a photopolymerization lock.
- FIG 5 there is shown various fasteners that can be used to attach the arms to the teeth. Fixation is performed by connection, in particular by clipping, of an element present at the end of the arm, and a pre-positioned element on the lateral surface of the tooth on the side of the inside of the mouth (palatal face or lingual tooth).
- These two clip elements are complementary and can have different shapes, which can by example be described as male and female forms. In the case of a pair of male and female forms, the male form can indifferently be on the arm, or attached to the tooth.
- Clipping involves a form of locking.
- the piece attached to the tooth has two disjoint forms separated by a space, and is called double male notch attachment 100.
- Each of the forms indeed has a space to engage a complementary shape attached to the arm. This complementary shape is then engaged between the workpiece and the tooth.
- the two disjoint forms are arranged back to back, which justifies the term "internal / external”.
- the engagement spaces jointly make it possible to propose a system for retaining the complementary piece attached to the arm.
- the piece attached to the tooth has a single slot and is described as a simple female notch connector 101.
- the piece attached to the tooth has an outer ball and is described as a male ball attachment 102.
- the part attached to the tooth has a double external notch and is described as a double female notch fastener 103.
- FIG. 6 shows the bonding surface of the fasteners to the teeth discussed above.
- These fasteners are of different sizes, curves and shapes to adapt to different dental morphologies: small size for fixation on an incisor or a canine, average for fixation to a premolar, or more important for fixation on a molar, as this is shown in Figure 6a.
- FIG. 6b shows an embodiment in which the bonding surface has a zone of weakness to allow easy removal by deformation.
- the efforts to be made to deform the attached fastener are shown in the left-hand part of FIG. 6c, and the result on the fastener, seen in profile, is presented in the right part of this FIG. 6c: the two parts of FIG. the fastener surrounding the fragile part deforms, releasing the tooth.
- FIG. 6d there is shown a bonding surface of medium size from different angles: from the front, top view, side view and rear view.
- the element is a thin piece, curved to fit a tooth surface, and having a meshed internal face to allow the mechanical retention of the glue. There is then a sticking on the surface of the tooth and a mechanical retention on the surface of the fastener.
- the bonding is done at the tooth or the dental prosthesis by a chemical bonding, and on the side of the attachment by a chemical bonding, if the coating is appropriate, or a mechanical retention by a wire mesh or a suitable retention surface.
- FIG 7 there is shown the detail of the attachment element type simple external notch. It is composed of an element that can be summarily parallelepiped wide enough to be able to limit any mobility of the axis of the beam and the beam itself, in rotation.
- the fastener has on its face opposite the bonding surface a fixing notch.
- Figure 8 there is shown the detail of a securing element type double notch attachment.
- Figure 8a the element is seen from above, while in Figure 8b, it is viewed from the side (latero-superior view).
- the bonding surface to the tooth is shown in its weakened version to facilitate peeling.
- the two parts of the fastener fastener type double notch are placed on either side of the zone of weakness. By exerting with a clamp a pressure on each side of the zone of weakness, it causes the deformation of the bonding surface and its detachment.
- FIG 9 there is shown the establishment of an arm in the mouth of a patient, the cylinder being temporarily held near the palace.
- An attachment element present at the end of the arm comes to interact with a complementary fastening element bonded to the tooth, to ensure a form of clipping between the arm and the tooth.
- the ball joints R1 and R2 at both ends of the arm allow all the elements to be flexibly positioned for full adjustment of the device in the patient's mouth.
- the central cylinder 23, also called base It comprises two identical elements which are rectangular parallelepipeds, or half-bases 23a and 23b facing each other symmetrically with respect to a plane P of general symmetry of the system.
- the plane P is positioned according to the morphology and the dysmorphosis of the patient, and to exert the forces necessary for the resolution of the dysmorphosis.
- the two half-bases 23a and 23b are separated by a screw 24 operable by a key, which separates them or on the contrary brings them closer to each other on either side of the plane of symmetry.
- the screw 24 is surrounded by two shafts 25 and 26 which hold the assembly consisting of two half-bases 23a and 23b rigid.
- Figures 10a and 10b show the cylinder in top view or bottom view, while Figure 10c shows the cylinder in front view.
- Figure 10a shows the cylinder 23 in the closed position enough
- Figure 10b shows, at the same angle, the cylinder 23 in the open position.
- These six ball joints R1 make it possible to link the jack to the six arms (not shown).
- Figures 11a to 11d show the degrees of freedom of arms 17 to 22 around the base in the vertical and anteroposterior directions.
- Figure 11a shows the vertical fit
- Figures 11b and 11c show the anteroposterior fit.
- FIG 11a there is shown the base view from the front.
- the figure is in a plane parallel to a plane comprising two ball joints R1 connecting the base and the two arms 18 and 21, and being parallel to the screw 24, but perpendicular to the plane formed by the screw 24 and the shafts 25 and 26.
- FIG. 11b which represents the base seen from above, the figure being in a plane parallel to the plane formed by the screw 24 and the shafts 25 and 26, there are shown arm rotations about an axis perpendicular to the plane of the figure. he here are the arms 20, 21 and 22 shown coplanar with the screw 24 and the shafts 25 and 26.
- the third degree of freedom in rotation around the ball joint R1 which corresponds to a rotation around the axis of the arm 17 to 22, may be present or absent (FIG. 11d).
- the mechanical links in rotation R1 are thus chosen from the complete ball joint connections (three degrees of rotation), finger ball joint (two degrees of rotation, shown in FIGS. 11a to 11c), or even in a simpler version, pivot (A single degree of rotation, selected from the two degrees of rotation shown in Figures 1 1 to 1 1 c).
- Figure 1 1 c there is shown a version in which the ball joints R1 are replaced by links R1 'allowing a discrete adjustment of an angle.
- This can be done by a system with complementary shapes polygonal and regular to embed.
- the example shown is hexagonal.
- the system can be used on one, two or three degrees of rotational freedom, in which case it uses a polyhedral embedding.
- FIG. 12 (12a, 12b and 12c), the degrees of freedom of the arms in terms of extension in length are represented.
- the transverse direction is indeed managed by the telescopic aspect of each of the beams.
- FIG. 12a the view is the same as in FIG. 11b: the extension of the arms 20, 21 and 22, which are retractable or telescopic arms, the total length of which can be adjusted, independently for each arms.
- FIG. 12b an exemplary embodiment of a telescopic arm is shown: it is a system comprising two arm parts, one consisting of a wide cylinder hollowed out from an internal empty cylinder opening onto a section right, and the other consists of a fine cylinder inserted into the empty cylinder of the first part.
- the two parts cooperate by screwing, or alternatively by a notched wedging system cooperating with one or more teeth, the threads, or the notches and the teeth being carried by the reciprocal contact surfaces of the two cylinders.
- the amplitude of the screwing movement or the choice of the notch or the tooth used for the setting makes it possible to adjust the length of the arm.
- FIG 12c another embodiment of a telescopic arm is presented: it is again a system with two parts of arms, like the previous one.
- the two parts are immobilized relative to each other by an outer valve which pivots with respect to one of the two parts and engages a notch among a plurality of notches carried by the outer surface of the other part.
- the choice of the notch makes it possible to adjust the length of the arm.
- the arms or beams are of fixed lengths, and the adjustment in length is at the central cylinder or at the level of the ball joints.
- FIG. 13 shows the degrees of freedom of the arms vis-à-vis the fastening systems to the teeth, or, if it is preferred, expressed otherwise, the freedom of orientation of the head of each arm to the arm to allow the orientation of the fasteners that must adapt to the teeth and their orientation.
- the arm shown for example is the arm 21.
- the arm 21 ends at its end connected to the cylinder 23 by a ball joint R1 and at its other end by a ball joint R2.
- the ball R2 articulates the arm 21 with a fastening element 30 to be fixed to a complementary element previously fixed to a tooth, such as those shown in FIGS. 6 to 8.
- Figures 13a and 13b show views in two planes perpendicular to each other, both parallel to the arm 21.
- the device is shown everything else equal, the ball R1 is kept frozen between the two views, which is symbolized by the black fill in the figure.
- the cylinder 23 retains the same spacing between the two views.
- the jack is seen from the front, the plane of the figure being perpendicular to the plane defined by the screw 24 and the shafts 25 and 26, whereas in FIG. 13b, the jack 23 is from above, in a parallel plane. to the screw 24 and to the trees 25 and 26.
- the fastening element 30 can be rotated in two dimensions of the space with respect to the arm 21, around two axes each perpendicular to the plane of respectively , Figure 13a and Figure 13b.
- the third degree of freedom in rotation around the ball joint R2 which corresponds to a rotation about the axis of the arm 21, may be present or absent, even if preferentially, it is interesting that he is present.
- the mechanical links in rotation R2 are thus chosen from the complete ball joint, finger ball joint, or even in a simpler pivot version (Figure 13c).
- the adjustment at the level of the ball joints R2 is very useful to allow the adjustment of the system. It must initially be flexible enough to be placed in the mouth precisely in its final place, while remaining passive, that is to say by applying no force on the teeth, gums and the palate. The device is then activated by rotating the cylinder screw, and begins its action from the position and configuration in which it was originally installed.
- the rotation at the level of the ball R2 can be continuous, with a mechanical connection, or discrete, with a system of embedding polygon or polyhedron, as evoked with the rotation R1.
- FIG 14 there is shown a fastening element as introduced in relation to the previous figure, namely the fastening element 30 placed at the end of an arm opposite the jack. It is here noted fixing element 30a.
- An arm for example the arm 21, is visible, as well as the associated ball R2.
- the fastening element to the tooth is a simple external notch fastener 101. It interacts, by clipping type fitting, with a hook shape of the fastening element 30.
- the fastening element 30 is carried by the ball joint R2 and rotated by it, with the arm 21.
- Figure 15 shows another fastening element as introduced in relation to the previous figure, namely the fastening element 30 placed at the end of an arm opposite the jack. It is here noted fixing element 30b.
- An arm for example the arm 21, is visible, as well as the associated ball R2.
- the fastening element to the tooth is a double external notch fastener 103. It interacts, by clipping-type fitting, with a double hook shape of the fastening element 30b, to increase the stability.
- the fastening element 30b is carried by the ball joint R2 and rotated by it with the arm 21.
- FIGS. 16a to 16c show the adjustment modes of the palatal expansion system 10 in the mouth of a patient.
- Figure 16a shows the antero-posterior adjustment of the base, which can be moved from the bottom of the mouth to the front of the mouth, along the palatal arch, remaining in the horizontal plane (for discussion, it is necessary to whatever the position of the patient, the horizontal plane is the anatomical horizontal plane).
- Figure 16b shows the transverse adjustment of the base, which can be moved from the center of the palate to the left of the palate or to the right of the palate.
- Figure 16c shows the height adjustment of the base, which can be moved upwards (that is, in the context of vertical or sagittal adjustment, or vertical adjustment of the distance from the base of the base).
- apparatus with the palatal vault that is to say in the direction of the roof of the palate or downwards, that is towards the center of the mouth (the patient standing).
- Fig. 17 shows an embodiment of the palatal expansion system 10a providing an additional mode of action that allows action on other palatal sutures. It incorporates, in addition to the elements described above, a second base having a second screw providing a second cylinder function, to act for example on the incisor sutures of the palate.
- the cylinder 23 and the arms 17 to 22 are shown here.
- the jack 40 the direction of expansion of which is approximately perpendicular to the direction of expansion of the jack 23. spacing adjustment between the cylinder 23 and the incisors.
- Two arms 41 and 42 are shown between the jack 40 and the incisors. Patellae may advantageously be present at one or other of the ends of these arms, or at both ends.
- a screw of the jack 40 ensures the spacing between two arms 41 and 42 and the jack 23, placed opposite them to the jack 40.
- This variant makes it possible to act to widen the palate in different directions, using different movements, to act on other bone sutures than the central suture of the sagittal plane. Other arrangements using different movements are possible, depending on the needs of the patient, to resolve his pathologies.
- the device may also include or be used with bone support means. Specific support devices are then used to screw through the gingival mucosa in the bone of the palate, by an additional module allowing the junction with mini-screw anchors or plates of osteosynthesis (adjusted on the gingiva), or implants of bone anchorage.
- FIG 18 there is shown a particular embodiment of the base, wherein three separate elements are attached to each other to facilitate manufacture or installation.
- the palatal expansion system 10b comprises two sets of three arms 50a and 50b, the three arms of each assembly being interconnected by a common base 51 to which they are articulated by the ball joints R1.
- An independent cylinder 51 is fixed by embedding or any other means to the two sets of three arms 50a and 50b, thus ensuring their connection.
- the controlled expansion elements of the jack screws and shafts for example
- FIG 19 there is shown a particular embodiment of an arm for the palatal expansion system according to the invention.
- This arm 60 has at each end of a ball joint R1 or R2, but is removable relative to the base and the cylinder. It can be fixed to the base by means of a fastening element by clipping carried by the ball joint and in rotation with respect to the arm or any other means carried by the ball joint and in rotation with respect to the arm, interacting with a complementary means carried fixed by the base.
- the ball R1 instead of being carried by the arm, can be carried by the base, the fixing element by clipping of the base being carried by the patella and interacting with a complementary element carried by the arm. In all cases, the clipping involves a form of locking.
- the device can be used in orthodontics or human dentofacial orthopedics, infantile, adolescent or adult, and possibly in a similar use for the animal.
- the implementation of the system includes the bonding of the fasteners on the teeth, the positioning of the base in the palace, the clipping of the beams, the adjustment of the position and the locking of the joints.
- the invention is not limited to the embodiments presented, but extends to all variants within the scope of the claims also in removable (patient removable) and non-bonded devices or fixed devices , sealed or glued (can only be removed by the practitioner).
- kits presented may be associated with elements manufactured by CAD / CAM (design and computer-aided manufacturing).
- the entire device can be supplied as a kit, that is to say a set of prefabricated elements that allows to set up a disjunction device or maxillary orthodontic distraction totally adapted and adjusted to the patient.
- these devices will be joined plates or gutters (plates with slot) manufactured by CAD / CAM entering a 3D chain of digital acquisition of the oral cavity to 3D printer printing of resin, composite material or metal by addition or subtraction process (milling).
- the device can be set up with elements prefabricated by CAD / CAM or other method such as plates or gutters adjusted to the dental morphology and / or palate.
- the device In the case of use of plates or gutters, the device is, for the patient, easily removable. Otherwise, it is fixed, in the sense that only the specialist practitioner is able to remove it.
- Mini-screws and orthodontic anchoring implants may also be associated with the device.
- a conventional impression with an alginate or silicone material
- an optical impression digital
- An internal or external device is also provided to make the adjustments and the necessary adjustment in advance.
- the device is intended for palatal expansion, it can also expand real or artificial mandibular sutures (created in this case by surgery). The functions described for this device allow it to also perform single or multiple dental movements, simultaneous or sequenced.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Dentistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Epidemiology (AREA)
- Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1653141A FR3049849B1 (en) | 2016-04-08 | 2016-04-08 | PALATIN EXPANSION DEVICE (MAXILLARY CIRCUIT BREAKER) |
PCT/FR2017/050801 WO2017174929A1 (en) | 2016-04-08 | 2017-04-05 | Palatal expansion device (palatal expander) |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3439574A1 true EP3439574A1 (en) | 2019-02-13 |
EP3439574B1 EP3439574B1 (en) | 2020-05-13 |
Family
ID=56855533
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17720547.3A Active EP3439574B1 (en) | 2016-04-08 | 2017-04-05 | Palatal expansion device |
Country Status (7)
Country | Link |
---|---|
US (1) | US11219508B2 (en) |
EP (1) | EP3439574B1 (en) |
CA (1) | CA3019156A1 (en) |
ES (1) | ES2819677T3 (en) |
FR (1) | FR3049849B1 (en) |
RU (1) | RU2760483C2 (en) |
WO (1) | WO2017174929A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10646308B2 (en) * | 2015-03-19 | 2020-05-12 | Joseph Yousefian | Dual expanding palatal distractor |
USD919097S1 (en) * | 2019-04-12 | 2021-05-11 | Spartan Orthodontics Inc. | Orthodontic distalizer |
DE102019115019A1 (en) * | 2019-06-04 | 2020-12-10 | Bernhard Förster Gmbh | Orthodontic expansion screw |
CA3140304A1 (en) * | 2019-06-05 | 2020-12-10 | Reza Radmand | Orthodontic expansion device |
US20210007831A1 (en) * | 2019-07-08 | 2021-01-14 | Susan E. Hamm | Dental system for symmetry of jaw, palate, and teeth |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3977082A (en) * | 1975-09-23 | 1976-08-31 | Siatkowski Raymond E | Palatal expander |
US4408989A (en) * | 1982-02-05 | 1983-10-11 | Unitek Corporation | Orthodontic palatal arch wires for accurate transmittal of correctional forces |
US5645422A (en) * | 1995-09-11 | 1997-07-08 | Williams; Michael O. | Mandibular and maxillary arch ander |
FR2742039B1 (en) * | 1995-12-08 | 1998-01-23 | Capron Bernard | LABIAL SPREADING DEVICE FOR FACE-BURNED PATIENTS |
IT1297371B1 (en) | 1997-11-27 | 1999-09-01 | Leone Spa | ORTHODONTIC EXPANDER |
RU2125851C1 (en) * | 1998-06-11 | 1999-02-10 | Московский медицинский стоматологический институт | Orthodontic apparatus with dilating screw |
US6358255B1 (en) * | 2000-03-06 | 2002-03-19 | Micerium S.R.L. | Distraction osteogenesis device and method |
DE50102514D1 (en) * | 2000-04-20 | 2004-07-15 | Albino Triaca | Device for expanding the palate |
DE10234376A1 (en) * | 2002-07-27 | 2004-02-05 | Hans Peter Herrmann | Apparatus for distal displacement of side tooth consists of two slide elements, transverse adjustment, adjusting screw, spiral spring, anchor plate and counter bearing block |
KR20090120895A (en) * | 2008-05-21 | 2009-11-25 | (주) 케이제이 메디텍 | Easily orthodontic screw expansion device |
US20130252195A1 (en) * | 2012-03-26 | 2013-09-26 | President And Fellows Of Harvard College | Orthodontic expander system and method |
-
2016
- 2016-04-08 FR FR1653141A patent/FR3049849B1/en not_active Expired - Fee Related
-
2017
- 2017-04-05 WO PCT/FR2017/050801 patent/WO2017174929A1/en active Application Filing
- 2017-04-05 US US16/091,652 patent/US11219508B2/en active Active
- 2017-04-05 RU RU2018138800A patent/RU2760483C2/en active
- 2017-04-05 ES ES17720547T patent/ES2819677T3/en active Active
- 2017-04-05 CA CA3019156A patent/CA3019156A1/en not_active Abandoned
- 2017-04-05 EP EP17720547.3A patent/EP3439574B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
RU2018138800A (en) | 2020-05-12 |
FR3049849A1 (en) | 2017-10-13 |
US11219508B2 (en) | 2022-01-11 |
RU2018138800A3 (en) | 2020-06-26 |
US20190159872A1 (en) | 2019-05-30 |
ES2819677T3 (en) | 2021-04-19 |
WO2017174929A1 (en) | 2017-10-12 |
FR3049849B1 (en) | 2021-02-19 |
EP3439574B1 (en) | 2020-05-13 |
RU2760483C2 (en) | 2021-11-25 |
CA3019156A1 (en) | 2017-10-12 |
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